Mattress-frame



(No Mom.) f

T. R. MUELLER 8a R. J. PRBUSS.

MATTRESS FRAME. N@ 5611684' Patented'une 9, 1895- jo ffm-f:

UNITED STATES PATENT EEicE.

THEOPHILUS R. MUELLER AND RUDOLF J. PREUSS, OF MILVAUKEE, XVISCONSIN.

MATTRESS-FRAM E.

SPECIFICATION forming part of Letters Patent No. 561,684, dated .T une9, 1896.

Application filed November 27, 1895. Serial No. 570,292. (No model.)

T @ZZ zt'tom t may concern:

Be it known that We, THEOPHILUS R. MUEL- LER and RUDOLF J. PREUSS, ofMilwaukee, in the county of Milwaukee and State of lV iscousin, haveinvented a new and useful Improvement in Mattress-Frames, of which thefollowing is a description, reference being had to the accompanyingdrawings, which are a part of this specification.

Our invention has relation to improvements in mattress-frames, havingparticular reference to that class of mattress-frames in which thewoven-wire mattress is attached to a cross-bar at the head and foot,with means device. Fig. 2 is a vertical sectional view on the line 2 2of Fig. 1. Fig. 3 is a vertical sectional view on the line 8 3 of Fig.2. Fig. L1 is an inverted plan view of the bracket. Fig. 5 is a verticalsection on the saine plane as Fig. 2 of a modified form of construction,and Fig. 6 is atransverse section of another modification. y

Referring to the drawings, the numeral G indicates the side rail of theframe provided near one end with an elongated recess 7, one end of saidrecess having advisably extending therefrom a groove 8. A bracket isseated upon the cut-away end portion of the side rail and its inner end.rests against the shoulder 9 of said side rail. The bracket consists ofa bed-piece 10, an outer side wall 11, end walls 12 12', and a topliange 13, which `[lange extends inwardly7 for a short distance. The

under side of the bed-piece is provided with a rectangular enlargementor projection la, which is of suicient width to just fit in theelongated recess 7, as clearly shown in Fig. 3. A slot 15 extendsthrough the bedpiece and the rectangular projection 1l of saidbed-piece, the slot extending longitudinally for a desired distance.Bolt-holes 1G 16 are made at opposite ends of the slot. The inner endwall 12' of the bracket is preferably provided with a projecting tongue17, which is adapted to lit in the groove S when the bracket is properlyadjusted to the side rail.

A movable cross-bar is provided, consisting oi two sections 18 and 19,provided, respectively, with a registering tongue and groove 18 and 19.The edge of the wire mattress 2O is adapted to be passed between theopposing faces of the sections of the cross-bar, said sections beingheld together by means of nails, bolts, or screws, such as 21.

A headed bolt 22 passes loosely through an opening therefor in the endwall 12 of' the bracket and thence through alined openings in thecross-bar 1S 19. The inner end of this bolt is threaded and may extendloosely into an opening in the inner end wall 12', although this is notabsolutely necessary, as successful results can be obtained if the endof the bolt terminates short of the innerend wall. The inner end of thebolt, however, is preferably extended into the opening of this wall 12,as the bolt is thereby rendered more rigid and secure against strain.

For securing the bed-piece of the bracket irrnly to the side rail Iprovide a bolt 23, which passes through the outer of the holes 16, thehead of said bolt being eountersunk in the upper iiaring end of thehole. The lower end of the bolt is threaded to receive thereon alocking-nut 21. This threaded en d and the nut thereon are disposedwithin a recess 25, formed in the under face of the side rail, so thatthere will be no projecting parts to prevent the side rail from restingsmoothly on the bed-frame.

Passing vertically through the end of the section 18 of the cross-bar isa bolt 2U, the

head thereof resting upon the top of said scction of the cross-bar. Thelower end of the bolt is threaded, and passing through the lon--gitudinal slot 15 enters the recess 7. The nut 27 is fitted on thethreaded end within the recess, and the width of the recess is narrowenough to prevent the nut from rotating with the bolt when said bolt isturned.

Located upon the threaded portion of the bolt 22 is a nut 28, which nutis adapted to bear against the inner face of the section 18 of thecross-bar. As the wire mattress exerts a pull or tension inwardly on thecrossbar, it is obvious that said cross-bar is brought firmly againstthe nut 2S, so as to practically make the nut in one with the cross-bar.In operation, therefore, by turning the bolt 22 the movable cross-barwill be moved in or out, according as to the direction in which the boltis turned.

As the strain on the bracket is for the most part at its outer end, thebolt 23 is used for securing the bracket to the rail firmly at thatpoint, while the tongue 17, iitting the groove S, is sufcient to holdthe inner end of the bracket in position. If desired, however, anadditional bolt could be passed through the inner bolt-hole 16.Thisinner bolt-hole, however, is more especially provided for thepurpose of permitting of the bracket being applied at the opposite endof the side rail or of the cross-bar, so as to make said bracketinterchangeable. The same is true in regard to the hole in the inner endwall 12', which, not being absolutely necessary for the end of the bolt22, is more especially provided in order to make the bracket reversible.

The top flange 13, with the bedpiece 10, forms ways or guides,betweenwhich the crossbar travels,while the side wall 11 is especially adaptedfor strengthening the device and for covering its operative mechanism onthe outside and protecting it from bedclothing which is placed over themattress and hangs down on the outside of the frame.

The vertical bolt 26 performs an important function, which will now bementioned. It is obvious that if this bolt were not provided in case ofwarping of the movable cross-bar and consequent tendency to bend thebolt 22 would under such circumstances be compelled to withstand theentire strain of preventing the bar from turning. Vhere the warping orshrinking is considerable the bolt itself would also be bent or thebracket itself broken. This is successfully prevented by the provisionof the vertical bolt 26, which relieves bolt 22 of the entire strain andat the same time as the lower end of said bolt 26 enters the recess 7the adjustment of the cross-bar is permitted, all that is necessary inorder to obtain such adjustment being to turn the bolt 26 by theapplication of a wrench or other suitable tool to the head thereof, thenut 27 on the lower end being held against turning by the side walls ofthe recess 7.

The bottom rectangular projection 14 of the f bed-piece not only servesto strengthen the bed-piece at the point where said bed-piece isslotted, but, furthermore, overcomes the tendency of the bracket to turnlaterally with the cross-bar when said cross-bar shrinks or warps, byreason of the fact that said rectangular projection ts in the recess 7.lt will be understood that this device constructed as described isadapted, in connection with another similar device at the other end ofthe same cross-bar, to adjust the tension of the woven -wire fabric onits frame. The fabric is rigidly secured to the frame at the other endor adjustably secured at such point, as desired.

In Fig. y5 we have shown two modified features of construction, oneconsisting in arranging the nut 2S on the bolt 22 within a socket 18therefor in the under side of the cross-bar 19. The edge of the squarenut bears against the upper wall of the socket and is held againstrotation thereby. The other modiiied feature consists in prolonging therecess 7 downwardly toward the under side of the side rail 6, asindicated by 7', the lower end of said prolongation communicating with arecess 7 in which the nut 27 is countersunk. By this arrangement the device is further strengthened and all the several parts thereof securelylocked together.

Fig. 6`shows a still further modication, wherein instead of employingthe vertical bolt 26,passin g through the cross-bar, through theelongated slot 15, and entering the recess 7, we use a horizontal bolt29, which passes through an elongated slot 30 in the side wall 11 andenters an opening 31 therefor in the section 19 of the cross-bar. Thisopening 31 communicates with a vertical recess 32, ex tending up fromthe under side of section 19, and the extremity of the bolt within therecess carries a nut 33, which bears against the upper wall of therecess and is thereby prevented from turning with the bolt when saidbolt is turned. The vertical bolt 26 is preferably used; but thismodiiied form just described may, if preferred, be adopted and willserve to effect a similar function as the vertical bolt, although,perhaps, not as efficiently. Under this construction when it is desiredto adjust the cross-bar all that is necessary to be done is to apply awrench to the head of the bolt 29, and thereby loosen the same.

W' hat we claim as our invention, and desire to secure by LettersPatent, is-

In a mattress-frame, the combination, of a side rail having a cut-awayportion forming a shoulder, the shouldered portion provided with agroove, a bracket rigidly secured to the side rail, said bracketconsisting of a bed-piece, and end walls, the inner end wall bearingagainst the shoulder of the side rail,

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In testimony whereof We affix our signatures in presence of twoWitnesses.

THEOPHILUS R. MUELLER. RUDOLF J. PREUSS.

Ttnesses ARTHUR L. MORSELL, ANNA V. FAUST.

